LF47轴流风机叶片B=4°,叶片安装角度为()时实际测量角度应为()。测量角度时应把角度尺放在叶尖()处调整叶片安装角到规定值。
参考答案:12.5°;8.5°;25mm
There are eggs and chicken on the table.
A.many; many
B.many; lots of
C.much; much
D.a lot; a lot
抗癫癎药物治疗用药的原则是
A.大剂量、突击、静脉用药B.按发作类型短期用药,随时改变品种C.按发作类型长期、规则用药D.长期、规则用药,禁酒E.大剂量、短期,合并用药